Projected Coordinates needed for analysis

[staschc]

At the moment, the coordinates are just provided as lat/long (WGS84). For spatial analysis, e.g. distance, buffering, etc., the coordinates need to be projected. It would be great to either have such a functionality on the server side. Otherwise, we may think about creating an additional analysis database that contains projected coordinates and maybe additional descriptive statistics that do not need to be computed on the fly each time.